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pcs are junk

macrumors 65816
Original poster
Sep 28, 2009
1,046
0
hi, like 2 or 3 days ago i jailbroke my iphone and unlocked it too, i had to restore it, then rejailbreak it. today, i was hearing somethings bad about jailbreaking that apple has said such as battery life drains faster, performance is slow, and even viruses. so today i restored it, first i restored it just by plugging it in and hitting restore, then after it was restored, i erased content and settings, then i put it into dfu mode, restored it, then i erased content and settings again, then put it into recovery mode and restored it. now has this completely gotten rid of the jailbreak? and also, if i do a software update after it has been restored after a jb, is it possible to still get bricked? thanks and i look forward to reading your answers!
 
I've never heard of an iPhone getting bricked unless you drop it in the lake or something.
 
first i restored it just by plugging it in and hitting restore, then after it was restored, i erased content and settings, then i put it into dfu mode, restored it, then i erased content and settings again, then put it into recovery mode and restored it.

LOL obsess much.....
 
hi, like 2 or 3 days ago i jailbroke my iphone and unlocked it too, i had to restore it, then rejailbreak it. today, i was hearing somethings bad about jailbreaking that apple has said such as battery life drains faster, performance is slow, and even viruses. so today i restored it, first i restored it just by plugging it in and hitting restore, then after it was restored, i erased content and settings, then i put it into dfu mode, restored it, then i erased content and settings again, then put it into recovery mode and restored it. now has this completely gotten rid of the jailbreak? and also, if i do a software update after it has been restored after a jb, is it possible to still get bricked? thanks and i look forward to reading your answers!

Unless someone else knows otherwise, it appears the DFU Recovery mode software built into the iPhone is in ROM (Read Only Memory). It'll never change once Apple has programmed it at the factory. Any changes done with Jailbreaking are all done to the OS stored in Flash memory.

So in theory, no matter how messed up your OS is in your Flash memory, you should always be able to enter DFU mode as its in ROM (assuming of course, the iPhone's Power/Home buttons are working and there's no other hardware mishap). The iPhone should never brick...but that's the theory.

Here's Apple's own post on how to enter DFU mode:

http://support.apple.com/kb/HT1808
 
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